Solving the Two-Stage Capacitated Facility Location Problem by the Lagrangian Heuristic. - Igor S. Litvinchev; Edith Lucero Ozuna Espinosa (ICCL, 2012)

Lagrangian Bounds and a Heuristic for the Two-Stage Capacitated Facility Location Problem. - Igor S. Litvinchev; Edith Lucero Ozuna Espinosa (Int. J. Energy Optim. Eng., 2012)

Approximate Circle Packing in a Rectangular Container: Integer Programming Formulations and Valid Inequalities. - Igor S. Litvinchev; Luis Infante; Edith Lucero Ozuna Espinosa (ICCL, 2014)

Using Different Norms in Packing Circular Objects. - Igor S. Litvinchev; Luis Infante; Edith Lucero Ozuna Espinosa (ACIIDS (2), 2015)

Using Valid Inequalities and Different Grids in LP-Based Heuristic for Packing Circular Objects. - Igor S. Litvinchev; Luis Infante; Edith Lucero Ozuna Espinosa (ACIIDS (2), 2016)